Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vu khach » vu khanh, vu khac, vay khach
hanh lai » hanh lam, hanh tai, thanh lap
cham cuu » cap cuu, chat cua
ve cham » va cham, ve chat, vu cham
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
cuu va » cuu van, cuu ve
x hoi » xa hoi, o hoi, 5 hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (vu khach)) ty nang ((x hoi) or (x ho)). hieu ve cham cuu va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu khach)) ty nang ((x hoi) OR (x ho)). hieu ve cham cuu va hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu khach)) ty nang ((x hoi) or (x ho)). hieu ve cham cuu va hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (vu khach)) ty nang ((x hoi) or (x ho)). hieu ve cham cuu va hanh lai cua triet*.